Boiler-flue tool



C. M; SPA NGLER.

BOILER FLUE TOOL.

APPLICATION FILED MAY 4, 1921.

Patented Sept. '27, 1921.

UNITED s rAcg'r QFFLCE- CHARLES M. SPAN'GLEB, OF EMP ORIUM, PENNSYLVANIA.

Specification of Letters Patent.

7 BOILER-ELITE. I'OOL.

Patented Sept. 27, 1921.

Application filed l lay 4, 1921. Serial No. 466,722.

This invention relates to tools for bending new and useful Improvements in'jBoiler-Flue down the flanged ends of boiler flues so that the latter maybe removed from the flue sheets.

I I-Ieretofore the common practic'e has been to use a cold chisel and hammer for} this purpose but this has been a slow operation with incident damage tothe flue sheets. It

has also been proposed to provide tools having jaws forbending downthe flanged ends.

Tools of this'character, however, have not had that degree of adjustability and efficiency demanded to meet various conditions and sizes of flues and flanges,so far as I am aware.

My object is to provide a tool adapted for bending down the flanges of boiler flues to release them from the flue sheets, without possibility of damage to the flue sheets and which will be of such improved, adjustable,

construction that it may be used in connec-v tion with various sizes of flues and flanges and will meet substantially all conditions encountered.

In carrying out my invention I provide a handle or lever which has a jaw of improved form adapted to be inserted in the flue and to serve as a fulcrum, combined with a bending jaw of improved form, and a yoke which embraces the lever and the shank of the bending jaw, there'being provided clampingv or securing means, first, to hold the yoke in any position to which it maybe adj usted on the handle or lever and, second, to hold the bending jaw in any position to which it may be adjusted in relation to the handle or lever.

The invention isset forth more fully hereinafter and its novel features are recited in the appended claims. I am aware that means other than those shown may be employed for securing the. yoke to the handle or lever and the bending jaw to the yoke and I do not, therefore, limit myself to the specific features of the invention shown in the drawing and hereinafter described, except where recited in the claims.

or lever only from the fulcrum 4. i

V the yoke 6 and jaw 5 may be In the accompanying drawing: Figure 1 is a side elevation of the complet tool, illustrating how it is used. 7

Fig. '2 is an end elevation at the jaw end of the tool. v F ig. Sis a detail perspective of the bending jaw. r

c Fig. 4; is adetail fulcrum jaw; and

' Fig; 5 is a plan'viewl The handle or lever'l is of suitable length to a lford'adequate leverage and is provided cross section through the With a squared part 1? having a jaw 2 which is 1."01unded"o r notched at 3 and terminates ma rounded fulcrum 4c. The jaw 2 may be narrower than the width of the squared'portion 1 to' facilit'ate the rockingjof the handle The bending jaw'5 has asquaredjshank 5 of the same width as the squared part 1 and it rests against the latter, being held by a yoke 6 which embraces the squared parts 1 and 5 Ascrew or fastening device 7 serves to clamp the yoke 6 to the squaredpart 1 a screw or fastening device 8 carried by the yoke serves to clamp the squared'part 5 to the yoke. Consequently adjusted as a unit in relation to the handle 1, and, further, the jaw 5' may be adjusted within, or through the yoke 6. The first adjustment described enables the yoke and jaw 5 to be set to the position generally required and then a finer adjustment of the jaw 5 is obtained by loosening the screw 8 and shifting the jaw 5 inside of the yoke 6 and tightening screw 8. j

The jaw 5 has its bending 0r gripping end offset from jaw 2 and suitably cut out or curved as at 5 to afford proper clearance between itself and the notched or cut away portions 3 to accommodate the flange or bead on the flue. The jaw is provided with a sharp or chisel-like edge 9 and its end 10 is sloped backwardly so as not to contact with the flue sheet and to permit the sharp edge 9 to take hold of the flange on the flue precisely where the edge of said flange is bent against the flue sheet.

The tool is operated as shown in Fig. 1, after suitable adjustment. ,The fulcrum 4:

bears against the inside of the flue and the chisel-shaped edge 9 works down between I the edge of the flange on the flue and the flue sheet so that the flange is bent down and the flue can be readily removed after the flanges or heads at both of its ends are thus bent. v.

The jaw 5 is narrowed or tapered from side to side to afford a sufficiently wide edge the flue sheets and saves a great deal of time which is required when a cold chisel is used.

I claim: V I

1. A boiler flue tool comprising a lever or handle provided with a jaw having a fulerum adapted to engage the inner surface of the flue which is to be removed, a bending or prying jaw adapted to engage the outer flange of'the tube, said jaw being slidable lengthwise ofthfe leveror handle aforesaid for the purpose of positioning it as desired in relation to the jaw and fulcrum, and a yoke embracing the shanks of the aforesaid jaws and provided with means for locking the bending jaw.

2. A boiler flue tool comprising a lever or handle provided with a jaw having a fulcrum'adapted to engage the inside of the flue, a bending jaw slidable lengthwise of the lever or handle aforesaid for the purpose of positioning it as desired in relation to the jaw and fulcrum, a yoke embracing the shanks of the two jaws aforesaid, means for securing the yoke to the shank of the handle or lever, and means for securing the bending jaw to the yoke, whereby the yoke and bending jaw may be adjusted as a unit on the shank of the handle and the bending jaw may also be independently adjusted in side of the yoke.

8. A boiler flue tool comprising a handle or lever having anotched jaw terminating in a fulcrum, and a bending jaw whose shank is adjustable lengthwise of the lever or handle and is provided with an offset jaw end having a chisellike extremity which is adapted to overhang the notched part of the jaw on the handle and is for the purpose of engaging the'flange on the flue to pry or bend it away from theflue sheet when the In testimony whereof I afiix my signature.

CHARLES M. SPANGLER.

handle is rocked on the fulcrum aforesaidf 

